Device for injecting preheated air into a shaft furnace and proc

Details Device for injecting preheated air into a shaft furnace and proc Device for injecting preheated air into a shaft furnace and proc

1991-11-08

1993-05-11

Yuen, Henry C.

Heating

Shaft type

Having combustion products generated in or fed to shaft

1101825, F23L 500, F27D 108

Patent

active

052096572

ABSTRACT:
A device is presented for injecting preheated air into a shaft furnace and comprises of a plurality of tubular elements provided with a refractory lining, which are connected to each other by a ball-and-socket articulation and an expansion joint. The ball-and-socket articulations comprise a convex ball portion formed in the refractory material of the adjacent segment. They comprise a protective shell made of refractory steel which extends around the convex part up to the base of the ball portion. The radius of curvature of each ball-and-socket articulation is in the range of magnitude of half the diameter of the tubular elements.

REFERENCES:
patent: 3662696 (1972-05-01), Mahr et al.
patent: 3766868 (1973-10-01), Mahr
patent: 4027605 (1977-06-01), Legille
patent: 4940005 (1990-07-01), Selvi
patent: 4987838 (1991-01-01), Mailliot et al.
patent: 5119743 (1992-06-01), Mailliet et al.

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